Sewing-machine



(No Model.) q ZSheets-Sheet 1. J. L. EOK.

SEWING MACHINE.

Patented Apr. 25, 1882.

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E a 25 eases.

N0 Model.) 2 Sheets-Sheet 2. J. L. EOK.

SEWING MACHINE.

Patented Apr.25, 1882.

o E m i-i m= i wag UNITED STATES PATENT ()FFICE.

JAMES L. EOK, 0F KUTZTOWN,PENNSYLVANIA.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 256,828, dated April 25, 1882.

Application filed May 28, 1881.

(No model.)

1' 0 all whom it may concern:

Be it known that I, JAMES L. EGK, a citizen of the United States, residing at Kutztown, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification.

This invention relates to that class of sewin g-machines which are provided with a rotary shuttle-carrier and shuttle, and has for its object to improve the mechanism for actuating the needle-arm; also, to improve the construction of the shuttle-race and the shuttle-carrier. These objects I attain by means of the devices hereinafter described, and illustrated in the drawings, in which- Figure 1 is a side elevation of a portion of a sewing-machine, and illustrates the devices for actuating the needle-arm. Fig.2 is an end view of the same with the driving-wheel removed. Fig. 3 is a plan view of the under side of the bed-plate. Fig. 4 shows a front view of the shuttlerace, shuttle, and carrier, and also shows a portion of the needle-bar and presserfoot. Fig. 5 is a top view of the shuttle-race. Fig. dis a section through the same. Fig. 7 is a perspective view of the shuttlecarrier. Fig. 8 is a section of the same, taken on liney 3 Fig. 7. Fig. 9 is a side view, and Fig. 1-0 an end view, of the shuttle.

Referring by letters to the several figures of the annexed sheets of drawin gs,inw hichI have principally shown only so much of a sewing-machine as will be necessary to illustrate the invention, Aindicates the bed-plate, upon which is secured an ordinary goose-neck, B, in any suitable or convenient manner. The single rotary driving-shaft O, employed for actuating both the shuttle-carrier and the needle'movement, has bearings G 0 formed upon the under side of the bed-plate at or near its ends, whereby there will be but little friction, and the construction of such parts of the machine greatly simplified. The mechanism for transmitting motion from the said driving-shaft to the vibratory needle-arm E, which is supported upon the goose-neck, is constructed and adapted for operation as follows: The driving-shaft U is provided with an eccentric, 0 upon which is loosely mounted the ring E. An upwardlyextending arm, e, ofsaid ring is connected with. a vibratory elbow-lever, F, that is fulcrumed at formed by the two arms of the latter.

one of the ends to the standard or vertical portion of the goose-neck, the pivotal point of connection between the arm of the ring and the lever-bein g at or about the center or angle To the upper end of this elbow-lever ispivoted a short link, G, that is connected at its upper end to the needle-arm, preferably by means of a balland-socket connection. The operation and advantages ofthis mechanism will be understood from the following: Supposing the needle and needle-bar (which will be actuated by the needle-arm) to be raised from the cloth-plate and the parts just described to be so timed that the arm of the ring upon the eccentric will at such juncture be at or about the extent of its downward throw, then, as the eccentric continues to revolve, the connections between the eccentric and the needle-arm will operate so as to vibrate the latter and cause the needle-bar to descend. When the needlereaches the lowest point in its movement the relative position of the ring and arm, the elbow-lever, and the link or connecting-rod that connects the latter with the needle-arm will be in theposition, or near- 1y so, shown in Fig. 2. Now, as the arm of the ring upon the eccentric is brought to a vertical position, or to the fullest extent of its upward throw, it is evident that the elbow-lever will be moved upon its fulcrum to a further arm the tension of the connecting-rod will be so slight on the needle-arm as not to actuate the same so as to raise the needle to any extent until the arm of the ring, the elbow-lever, and the connecting rod are in line, as about shown in Fig. 2.

The above-described cessation or pause of the vibration of the needle-arm gives the shuttle-carrier that is upon the forward end of the driving-shaft 0 time to pass through the loop formed by the thread of the needle. It also permits a positive and effective movement of the shuttle-carrier, and will be found simple, substantial, easy, and noiseless. Also, by

during the operation of the machine. 4

race.

shuttle without detaching its carrier.

means of this movement I am enabled to use a larger shuttle and bobbin than in the sewingmachines now in use.

H indicates the shuttle-race, the inner face of its nearly-annular track being beveled inwardly, as indicated at h, Fig. 6, in order to form a receptacle for maintaining the shuttle within the race. The rotary shuttle-carrier I is fastened to a semicircular plate, i, which is secured to the end of the shaft 0, as illustrated by dotted lines in Fig. 4;. The connection between this plate and the shuttle-carrier is effected by means of screws K, passing through slots Kin the shuttle-carrier, whereby thelatter can be adjusted and tightened up a little toward the shuttle in case of too much play of the shuttle during operation.

The shuttle-carrier is recessed at its upper portion, as at L, and beveled with an inward slant along the sidesand bottom of saidrecess,

as indicated at Z, Figs. 7 and 8, the said recess constituting a seat for the shuttle M, and its falling out.

The shuttle-race is cut away at its upper portion so as toform an enlargement, N, in the This enlargement serves two purposes. First, it affords space for the thread to form a loop for the shuttle to pass through, as usual; and, secondly, it admits of the removal of the The face of theshuttle-carrieris couvexed orturned inwardly at one corner, 6 of its recessed portion, and abruptlybeveled at such point from its outer to its inner face.

This beveled portion, being at the rear enlarged edge of the shuttle when the latter is seated in thecarrier, prevents the carrier from catching the threads The shuttle-carrier is also formed with a bevel, i from about a line alongits screw holes or slots down to its bottom edge, this conformation being best shown in Fig.8, and is designed for the purpose of allowing the thread to pass easily It will be observed by referring to Fig. 7

that the bottom of the recessed portion of the shuttle-carrier increases in width from one end to the other, the projection 11 at the thickest part of the sh uttle-carrier having a beveled inner wall, i that is at an oblique angle to the inner face of the shuttle-carrier. The forward beveled end, m, of the shuttle rests against this oblique wall 6 the beveled projecting point i that is in front of the shuttle-point, serving to throw the thread away from the needle and to form a clear way for the shuttle to pass, and also to make the stitch uniform.

The shuttle, which is formed with a slight bevel, M, fits between the two beveled end walls of the recess in the carrier, and will, by means of the conformation of the devices described, be at all times maintained in proper place.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. Thecombination, in a sewing-machine, of the driving shaft, the eccentric thereon, the arm a, the right-angle elbow-lever F, pivoted by one arm to the goose-neck B, and to which the arm 0 is pivoted, and thelink G, connected to the needle-arm E and pivoted to the other arm of the elbow-lever, the relation of the parts being such that the distance from the needlearm to its pivot on the elbow-lever and the distance from that pivot to the pivot of the elbow-lever on the goose-neck are equal, whereby the needlearm and its bar are held substantially at rest for a moment when they are in their lowest positions, substantially as and for the purpose set forth.

2. The combination, in a sewing-machine, of the shuttle race H, cut away to form the enlargement N, in order to provide space for the 

